Hi Bailejor,
Can you confirm that you have entered the correct information into the gateway?
Everything in Losant is case-sensitive so you need to ensure that you have entered the correct information into the gateway. This involves ensuring that the secret keys and access keys are entered correctly and you also need to enter the correct device ID.
I would suggest going through the getting started guide again and you can also check out this YouTube video that may help you out:
Let us know if that helps
Thanks